Outboard motor



June 811937. Am; MA ALER 2,083,437

OUTBOARD MOTOR Filed July 1, 1951 s Sheets-Sheet 1 ATTORNEY June 8,1937. v

A DE 'MADALER OUTBOARD MOTOR s Sheets-Sheet 2 Filed July 1, 1931INVENTOR ATTO Y June 8, 1937. A. DE MAD ALER OUTBOARD MOTOR Filed July1, 1951 3 Sheets-Sheet 3 ATTORNEY 7 Patented June 8, 1937 UNITED STATESPATENT OFFICE}:

OUTBOARD MOTOR Arthur De Madaler, Hampton Bays, N. Y. Application July1, 1931, Serial No. 548,0"76

' Claims. (Cl. 185 -9.)

This invention relates to outboard motors.

A type of internal combustion engines, specifically designed to besupported out board from water craft, such as canoes and the like, has

5 grown up and is generally known under the name of outboard motors.Such motors generally are mounted at one end of the craft'a'nd arereadily positioned or removed at will. -In order to start such engines,it is necessary to impart to the moving elements an initial impetus. Forthis purpose, these motors are provided with a plate mounted uponthefly-wheel, to a hook in the periphery of which may be applied a ropeend; by pulling on the rope, rotation of the plate 5 and the fly-wheelresults. The force necessary for this method of cranking the engine isconsiderable, even with the lever arm afforded by the plate.

It is an object of the invention to provide a 20 starter which may beapplied to substantially any motor of this type without any materialchange, merely by removing thestarting plate and securing the starter inits stead.

It is an object of the invention to provide a starter for outboardmotors for imparting the initial rotative motion necessary for placingsuch motors in action, in which starter there is provided means forstoringup' energy, and then to release such stored-up energytoturnf'over 30 the engine. For this purpose, in the particularembodiment herein, the energy storing means consists of a spring motorwhich may be wound by hand, the force necessary for winding the springmotor being but a fraction of the force which would be necessary if theshaft of the motor were directly engaged to rotate it for crankingpurposes. In a starter of this type, suflicient energy may be stored toeffecta plurality of consecutive revolutions of the motor shaft, which,40 as is well known, sometimes becomes necessary when attempting tostart such engines. This operation is generally termed, spinning.

It is an object of the invention to provide apparatus for, starting anoutboard motor of the 45 type indicated by utilizing energy stored-up insome means, such as a spring motor, in. which a coupling between thespring motor and the engine shaft is effected in such manner that themeans may rotate the shaft in none but the 50 proper direction forstarting the engine, the coupling being ineffective for rotation of theshaft in the opposite direction, and automatically releasing the shaft,after the engine has been started, so that the shaft mayrotaterelatively 55 to the means without interference.

It is an object of the invention to provide energy storing means for anengine starter of the type indicated, in which there is included a crankor similar element by which small quantitiesof energy may be transferredto-an energystorage 5 element, this crank being arranged to be normallyout of energy storing connection withthe en'-'- ergy storing means, anda-coupling for efiecting a separable interconnection between the energystorage element and the engine shaft, there be- 10 ing an interlockbetween'the coupling and the crank so that only one of these may beefiective at any one time. If desired, there may be associated with thecoupling, the crank and their interlock, means for making the couplingand the crank simultaneously inactive atany desired time.

Due to the peculiar construction of engines of the type generallyunderstood under the appellation, outboard motors, the location andmounting of a spring motor for cranking the engine raises certainproblems peculiar :to this situation. Lightness is an' essentialrequisite since these motors are adapted to be mounted upon and removedfrom their association with a particular craft. compactness also may notbe sacrificed; Little enough spacegenerally-ds available for the motoritself. The starter should interfere as little as possible with" theremaining space. The available points for attachingthe starter, becauseof the compactness ofthe' apparatus, are few. All of these factors havebeen considered and have beenovercome in thestarter herein designed inaccordance with the invention.

For the attainment of these objects and of such other objects andfeatures as may hereinafter appear or be pointed out, I have illustratedan embodiment of my invention in the drawings wherein:- v 40 Fig. 1 is aview in perspective of anoutboard motor to which has been appliedstarting mechanism embodying the invention; a

Fig. 2 is a plan view of the starting mechanism, portions of the supportand of the spring. motor housing being broken away to clarifyconstructional details;

Fig. 3 is aiside elevational view of the starting. mechanism, shownconnected to the motor shaft,

and a portion of the housing being broken away. Q

to illustrate the internal arrangement thereof I Fig. 4 is a bottom plandetail view, illustrating the arrangement of certain elements of theinterlockyand v Fig. 5 is a view in'elevation of adetail, illus-' 5 10 bemodified in various particulars or be applied in many varied relationswithoutdeparting, from the spirit and scope of the invention, apractical embodiment of which has'been herein illustrated;

and. described without attempting to show all invention might beembodied.

The outboard motor orengine l0, shown in Fig. 1, may be of any well typerequiring 5? an initial impetus'for-setting it in power rotation Theparticular showing here includes cylinders l2,

bracket and arms, the motor may be suspended] over an edge of the boatso that the propeller is submerged. A rudder handle 24 is so arrangedthatctlie rudder body 26 maybe twisted around l with the propeller toguide the craft.

Assembled atthe extended end 28 f shaft I4, and preferably in concentricrelation thereto, is the starting mechanism 30. This mechanism. maybemounted in any desired mariner upon the framework 2250 that it isrigidly retained there- 'upon'. For this purpose bracket arms 32may beprovided. Preferably, thesearms are disposed to engage with somesubstantially rigid portions of the: motor body, as, for instance, partson the cylinder heads andthe fuel supply tank support. Mechanismincludes a housing 34within which, in this particular embodiment,-isenclosed a coil spring it. However, there might be substituted for,this" spring any means for storing energy mechanically, which energy maybe re-created into motion at will.

The spring 36 is anchored to one of a plurality of posts 38 formingstiffene'rs for housing 34. fl'heother end of the spring is secured to ashaft 40'which is bearinged in the opposed face plates 42 and 44 of thehousing. Shaft 40 extends upwardly beyond the top face plate, and has agear 46 secured thereto.

. Adjacentthe side of. the housing-there is provided. a sleeve '48,extending between the two face plates." Withinthe sleeve extends a. pin50,

that, by properly locating the crankive'rtically,

I the. 8 21 maybe brought into engagement with gear 46 to rotate thelatter. At the connection 7 of pin 50 withthe crank 52, there is locateda collar. 58. which is substantially circular in crossysectionexcept'forthe vflat surface .60. A.;leaf- V spring 62," secured td the face plate4 2,,fpress'es against collar 58; when in engagementwith the 94%? 7empura; r11 ed; 9; reta n t crank and its handle extending over thehousing,

as shown in dot-and-dash lines in Fig. 2.

Within sleeve 48 there is a spring 64 which encompasses pin 50 and bearsagainst an enlarged shoulder 66- adjacent the upper portion thereof, andis seated within the sleeve against the bottom face plate 44. The pinextends through the bottom face plate, andhas a pin 68, or like lockingmember, positioned crosswise thereof to prevent separation of pin 50from the housing under the action of spring 64. The crank and gear 56are normally raised away from the top'face plate bythis spring, as shownin full'lines in Fig. 3, but may, at will, be depressed 15 the variousforms and modifications in which the v'f1g9'8e1'neI1l5 with. s pp fromthe dot-and -dash lines.

A ratcheting pawl I0 is pivoted upon top face late ;42, andis providedwith teeth I2 to engage with the teeth of gear 46to retain spring 26inany wound-up condition. A leaf spring I4,

anchored'upon the topplate, and bearing against pawl 10, retains thelatter normally .in engagement with gear 46, asshown in full lines inFig. 2. A handle I6,'pivoted adjacent theextending arm- 10 of pawl 10,is eccentrically mounted so that a boss'00 thereof may be brought intoengagement'with the arm in order to release, from interengagement theteeth I2 and gear 46, as appears from the dot-and-dash lines of Fig. 2.Tko

stops. az-are provided 'for limiting movement of handle I6. Thus,whencrank 52 is depressed, spring, 36 may be wound, pawl I0 preventingrunningdownof the spring when' gears 46 and '50 become separated,accidentally or intentionally. ,When itis desired to utilizethestored-up.

energy, handle 'It may be actuated to release the pawl and permitrotation of shaft 40 unde the actionof the spring.

normally; to retain the two sets of teeth inter engaged. Theconstruction of the teeth, however, is such, that, as can be seenfromFig. 3,

movementof collar" in but one direction will effect movement of collars90, and therefore, of shaft 14..

In" order to substitute the mechanism. for

theordinary starting plate of an outboard motor, it is merelynecessaryto remove the starting plate fromcthe-flyrwheel and to threadthe collar 90 upon-the end of shaft l4 thus exposed. Then, by mountingthe rest of the mechanism, supp'orted'on the bracket arms 32, upon'theengine, the apparatus will be speedily'in condition. for operation I I jA circumferential groove I02 is formed. in collar 180m receive a pair ofpins I04, inwardly extending from a yokev I06. This yoke is'plvoted at;I08 .upon ,the bottom face plate, andhas affinger H0 directed beneathpin 50 in. such manner that, when pin 50 is depressed to bring gears 46and into engagement, collars and as will be -.separated. It is apparent,therefore, that; when either set, that is,gearsf48 and 56, or collars,and 98, are engaged, the other set must be inactive. I

Pivoted uponbottom face plate 44 is an arm H2 having an extending fingerH4, the front edge of which is bevelled, as seen at H6. This edge islocated, as indicated in Figs. 3, 4 and 5, so .as to be capable ofengagement with finger H when the crank 52 is raised to make the gears46 and 56 inactive. By rotating the arm H2 from the full to thedot-and-dash line positions of Figs. 3, 4 and 5, the finger 4 may beforced between the pin end and finger H0, and thus make the crank andthe clutch I00 simultaneously inactive. A pair of stops H8 may beprovided to limit the movement of arm H2.

As can be realized from a comparison of the relative lever arms of crank52 and the gearing Z6 and 56, the effective force necessary to windspring 36 is but a small fraction of the force which would necessarilybe exerted if shaft I4 were to be engaged directly by a crank.

In operation, after arm H2 has been moved to make finger H4 ineffective,crank 52 is depressed, and, by rotating the crank, spring 36 is wound,pawl retaining the spring in its wound-up condition. Then, on releasingthe crank, its spring 64 will cause separation of gears 56 and 46, whilespring 90 will cause interengagement of the teeth 94 and 96. Now, byretating handle 16, pawl Ill may be released so that the spring may actto rotate shaft I4 for the desired operation. After the engine has beenstarted, the arm H2 may again be positioned so that its finger locks thecrank and the clutch in' inoperative positions.

Many other changes could be effected in the particular apparatusdesigned, and in the ma ner of use set forth, and in specific detailsthereof, without substantially departing from the invention intended tobe defined in the claims, the specific description herein merely beingfor one operative embodiment whereby the spirit of the invention may beeffected.

Having thus described my invention and illustrated its use, what I claimas new and desire to secure by Letters Patent is- I 1. In combinationwith a shaft to be driven,

a spring motor mounted to impart driving power to the shaft, aratcheting coupling between the spring motor and the shaft, 2. housingfor the spring motor, a gear upon the housing, rotation of which effectstensioning of the spring motor, a crank for engaging and rotating thegear, the crank being retained normally raised away from the housing, ashaft rotated by said crank, a pivoted link between the crank shaft andthe coupling to make the latter inoperative when the former isoperative, one end of the link being positioned to be depressed by thecrankshaft, and means for forcing the link and the crankshaft apart. 1

2. In combination with a member to be driven, an energy receivingelement, means including a cranking shaft for storing energy in theelement, means for coupling the element to the member to be driven, andmeans responsive to operation of the energy receiving means forpreventingoperation of the coupling, said last named means including apivoted link interposed between said shaft and coupling means to makethe latter inoperative when the former is operative, and means forforcing said link and shaft apart.

3. In combination with a member to be driven, mechanism including acranking shaft for imparting thereto an initial rotation for startingpurposes including an energy storing element, means for coupling theelement to the member to be driven to rotate it, means for imparting tothe element theenergy necessary for effecting the initial rotation ofsaid driven member, the imparting means being inoperative when thecoupling means is operative, the coupling means being inoperative whenthe imparting means is operative, and means for making the imparting andthe coupling means simultaneously inoperative, said last named meansincluding a pivoted link interposed between said cranking shaft andcoupling means to make the latter inoperative when the former isoperative, and means for forcing said link and shaft apart.

4. In combination with a member to be driven, mechanism including acranking shaft for imparting thereto an initial rotation for startingpurposes including an energy storing element, means normally active tocouple the element to the member to be driven to rotate it, means forimparting to the element the energy necessary for effecting the initialrotation of said driven member, the imparting means normally beinginoperative, the imparting means being inoperative when the couplingmeans is operative, the coupling means being inoperative when theimparting means is operative, and means for making the imparting and thecoupling means simultaneously inoperative, said last named meansincluding a pivoted link interposed between said shaft and couplingmeans to make the latter inoperative when the former is operative, andmeans for forcing said link and shaft apart.

5. In combination with a shaft to be driven a spring motor mounted toimpart driving power to the shaft, a ratcheting coupling between thespring motor and the shaft, a housing for the spring motor, a gear uponthe housing, rotation of which effects tensioning of the spring motor, ashaft engaging and rotating the gear, the latter being retained normallyraised away from the housing, and an interlock between the second-namedshaft and the coupling to make the latter inoperative when the former isoperative, said interlock including. a pivoted link one end of which ispositioned to be pressed by said shaft and means for forcing the linkand shaft apart.

ARTHUR DE MADALER.

